The best opening move for 4-3 in backgammon is 13/9 13/10. Two builders aimed at the 5- and 4-points. Watch it on the board, then read the idea behind it.
The idea behind the move
With 4-3 play 13/9 13/10: two checkers from the 13-point come down to the 9- and 10-points, aimed at the 5- and 4-points.
A close second choice: 24/20 13/10.
What comes next
Both checkers are lone, but the risk is small and many rolls turn them into a point. Your next move will probably make a valuable point.
How to read the move
A move like 24/18 means one checker goes from your 24-point to your 18-point. Points are counted from your side: 24 is the farthest, 1 is the deepest in your home board. “(2)” after a move means you play it with two checkers.